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Two suicide bombers attacked a convoy of buses carrying Afghan police trainees, killing at least 30 people, according to reports from The Associated Press and Reuters.

The attack occurred about 12 miles west of Kabul, the AP says, citing the Paghman district governor, Mousa Rahmati. More than two dozen police trainees died, as well as four civilians, the AP says.

The Taliban has claimed responsibility for the bombings.

The attack involved two explosions, Rahmati told the AP.

Donald Trump has staked his brand on winning. "We will have so much winning," he has said in this campaign, "if I get elected, that you may get bored with winning."

But can he win the presidential election? In a country that has changed rapidly demographically, Trump's best shot is to drive up turnout among white voters, especially white men. But how likely is that?

After some 10,000 online tutorials in 10 years, Sal Khan still starts most days at his office desk in Silicon Valley, recording himself solving math problems for his Khan Academy YouTube channel.

"OK, let F of X equal A times X to the N plus," he says cheerfully as he begins his latest.

Khan Academy has helped millions of people around the world — perhaps hundreds of millions — learn math, science and other subjects for free.

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An unscheduled meeting between the U.S. attorney general and former President Bill Clinton at an airport in Phoenix on Monday could present some unwanted political problems for both.

The former president, who was waiting to depart the state, boarded Loretta Lynch's government aircraft shortly after she landed in Arizona for a community policing event. Lynch later told reporters there the conversation centered on "his grandchildren."

"It was primarily social and about our travels," including golf he played, Lynch said.

Swimming superstar Michael Phelps made history again Wednesday night. At the U.S. Olympic swimming trials in Omaha, Neb., Phelps qualified for a record fifth Olympic games. He's the first American male swimmer to do that.

But Phelps is one of the few veterans having success so far at the trials. That's because a batch of young, first-time Olympians is stealing the show.

Presumptive Republican presidential nominee Donald Trump traveled to the small city of Monessen, Pa., on Tuesday to speak about the impact of international trade on U.S. manufacturing jobs.

As he has before, Trump launched a full-throated attack on globalization, pinning the blame on politicians he says have allowed the U.S. manufacturing base to get hollowed out.

"We allowed foreign countries to subsidize their goods, devalue their currencies, violate their agreements and cheat in every way imaginable. And our politicians did nothing about it," he told the crowd.

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Jason Margolis

If you’re from, say, California or Michigan, would you say you’re a Californian or Michigander first, or an American? You probably haven’t spent all that much time pondering this. But ask a Puerto Rican that question — are you a Puerto Rican or an American first — and the responses can get pretty involved.

At a summer leadership session in San Juan for university students, with the group Puerto Rican Minds in Action, a few college students talked about their identities as Puerto Rican Americans.

Why is ISIS attacking Turkey, a Muslim country?

22 hours ago
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Osman Orsal/Reuters

Turkey, for a long time, was a beacon of stability between Europe and the Middle East.

Now, the country is caught in a vortex of high tension and overlapping security crises.

Turkey has taken in a huge number of Syrian refugees — approximately 3 million. It’s also under severe pressure from Europe to stem the flow of migrants and jihadists, and yet more pressure from the US to battle ISIS.

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